Patents by Inventor Federico Guanziroli
Federico Guanziroli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10118819Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.Type: GrantFiled: January 19, 2017Date of Patent: November 6, 2018Assignee: STMicroelectronics S.r.l.Inventors: Alberto Cattani, Alessandro Gasparini, Federico Guanziroli, Pierangelo Confalonieri
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Patent number: 10103734Abstract: A level shifter circuit includes: an input stage for receiving an input signal switchable between a first and a second input level and an output stage to produce a drive signal for the load that is switchable between a first and a second output level. A level translator translates the input signal switching between the input levels into the output stage switching between the output levels. A feedback element coupled to the output stage transfers to the input stage a feedback signal representative of the output level of the output stage. The input stage includes control circuitry sensitive to the input signal and the feedback signal for detecting undesired switching of the output stage between the first and second output levels occurring in the absence of input signal switching between the first and second input levels. The control circuitry inverts the output level of the output stage resulting from undesired switching.Type: GrantFiled: May 31, 2016Date of Patent: October 16, 2018Assignee: STMicroelectronics S.r.l.Inventors: Dario Bianchi, Federico Guanziroli, Davide Ugo Ghisu
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Patent number: 10033352Abstract: A phase shifter, which carries out a ninety-degree phase shift of a sinusoidal input signal having an input frequency, at the same input frequency, envisages: a continuous-time all-pass filter stage, which receives the sinusoidal input signal and generates an output signal phase-shifted by 90° at a phase-shift frequency that is a function of a RC time constant of the all-pass filter stage; and a calibration stage, which is coupled to the all-pass filter stage and generates a calibration signal for the all-pass filter stage, such that the phase-shift frequency is equal to the input frequency of the sinusoidal input signal, irrespective of variations of the value of the input frequency and/or of the RC time constant with respect to a nominal value.Type: GrantFiled: February 25, 2016Date of Patent: July 24, 2018Assignee: STMICROELECTRONICS S.R.L.Inventors: Germano Nicollini, Roberto Modaffari, Marco Garbarino, Federico Guanziroli
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Publication number: 20170149434Abstract: A level shifter circuit includes: an input stage for receiving an input signal switchable between a first and a second input level and an output stage to produce a drive signal for the load that is switchable between a first and a second output level. A level translator translates the input signal switching between the input levels into the output stage switching between the output levels. A feedback element coupled to the output stage transfers to the input stage a feedback signal representative of the output level of the output stage. The input stage includes control circuitry sensitive to the input signal and the feedback signal for detecting undesired switching of the output stage between the first and second output levels occurring in the absence of input signal switching between the first and second input levels. The control circuitry inverts the output level of the output stage resulting from undesired switching.Type: ApplicationFiled: May 31, 2016Publication date: May 25, 2017Inventors: Dario Bianchi, Federico Guanziroli, Davide Ugo Ghisu
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Publication number: 20170129773Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.Type: ApplicationFiled: January 19, 2017Publication date: May 11, 2017Inventors: Alberto CATTANI, Alessandro GASPARINI, Federico GUANZIROLI, Pierangelo CONFALONIERI
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Patent number: 9604842Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.Type: GrantFiled: March 31, 2015Date of Patent: March 28, 2017Assignee: STMICROELECTRONICS S.R.L.Inventors: Alberto Cattani, Alessandro Gasparini, Federico Guanziroli, Pierangelo Confalonieri
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Patent number: 9553546Abstract: A differential output stage of an amplification device, for driving a load, comprises a first and a second differential output stage portion. The first differential output stage portion comprises: a first and a second output circuit; a first driving circuit comprising a first biasing circuit; a second driving circuit comprising a second biasing circuit. The first differential output stage portion comprises: a third output circuit connected between a first node of said first biasing circuit and a first differential output terminal, having a third driving terminal connected to a first driving terminal; a fourth output circuit connected between a first node of the second biasing circuit and the first differential output terminal, having a fourth driving terminal connected to a second driving terminal.Type: GrantFiled: January 21, 2014Date of Patent: January 24, 2017Assignee: OPTIS CIRCUIT TECHNOLOGY, LLCInventors: Pierangelo Confalonieri, Federico Guanziroli, Germano Nicollini
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Publication number: 20170019087Abstract: A phase shifter, which carries out a ninety-degree phase shift of a sinusoidal input signal having an input frequency, at the same input frequency, envisages: a continuous-time all-pass filter stage, which receives the sinusoidal input signal and generates an output signal phase-shifted by 90° at a phase-shift frequency that is a function of a RC time constant of the all-pass filter stage; and a calibration stage, which is coupled to the all-pass filter stage and generates a calibration signal for the all-pass filter stage, such that the phase-shift frequency is equal to the input frequency of the sinusoidal input signal, irrespective of variations of the value of the input frequency and/or of the RC time constant with respect to a nominal value.Type: ApplicationFiled: February 25, 2016Publication date: January 19, 2017Inventors: Germano Nicollini, Roberto Modaffari, Marco Garbarino, Federico Guanziroli
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Patent number: 9287874Abstract: A voltage level shifting device for driving a capacitive load has an input terminal for receiving a first input signal switchable between a first logic state corresponding to a first reference voltage and a second logic state corresponding to a second reference voltage, and an output terminal for supplying an output signal switchable between a first logic state corresponding to a third reference voltage and a second logic state corresponding to a fourth reference voltage. The device also has a first electronic circuit that is activated following a commutation of the first input signal from the first reference voltage to the second reference voltage for fixing the output terminal to the fourth reference voltage. The device further has a second electronic circuit that is activated following a commutation of the first input signal from the second reference voltage to the first reference voltage.Type: GrantFiled: December 5, 2013Date of Patent: March 15, 2016Assignee: ST-ERICSSON SAInventors: Pierangelo Confalonieri, Federico Guanziroli
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Patent number: 9264060Abstract: A new approach is disclosed concerning offset cancellation methods in analog to digital converters and analog to digital converters implementing the same. Such approach allows to efficiently cancel offset drifts in analog to digital converters.Type: GrantFiled: November 7, 2013Date of Patent: February 16, 2016Assignee: ST-ERICSSON SAInventors: Pierangelo Confalonieri, Federico Guanziroli, Alberto Minuti
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Patent number: 9237406Abstract: An integrated circuit for processing audio and voice signals in a telephone is disclosed. The integrated circuit comprises an audio output port having a first and a second output terminal for connection to a first and a second input terminal, respectively, of a speaker. The integrated circuit further comprises an audio input port having a first and a second input terminal for connection to a first and a second output terminal of an audio input source. The integrated circuit also comprises at least one audio output path and one audio input path. Moreover, the integrated circuit comprises a test impedance, such as a resistor, (RT) for measuring an electrical impedance of the speaker.Type: GrantFiled: July 7, 2011Date of Patent: January 12, 2016Assignee: ST-ERICSSON SAInventors: Federico Guanziroli, Sergio Pernici, Robert Nilsson, Jan R. E. Thimansson
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Publication number: 20150372680Abstract: A voltage level shifting device for driving a capacitive load has an input terminal for receiving a first input signal switchable between a first logic state corresponding to a first reference voltage and a second logic state corresponding to a second reference voltage, and an output terminal for supplying an output signal switchable between a first logic state corresponding to a third reference voltage and a second logic state corresponding to a fourth reference voltage. The device also has a first electronic circuit that is activated following a commutation of the first input signal from the first reference voltage to the second reference voltage for fixing the output terminal to the fourth reference voltage. The device further has a second electronic circuit that is activated following a commutation of the first input signal from the second reference voltage to the first reference voltage.Type: ApplicationFiled: December 5, 2013Publication date: December 24, 2015Inventors: Pierangelo CONFALONIERI, Federico GUANZIROLI
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Publication number: 20150344295Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.Type: ApplicationFiled: March 31, 2015Publication date: December 3, 2015Inventors: Alberto CATTANI, Alessandro GASPARINI, Federico GUANZIROLI, Pierangelo CONFALONIERI
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Publication number: 20150349716Abstract: Differential output stage (200) of an amplification device, for driving a load, comprises a first (201) and a second (202) differential output stage portion. The first differential output stage portion (201) comprises: a first (M1PSW) and a second (M1NSW) output circuit; a first driving circuit (210) comprising a first biasing circuit (M2P, M3N, M4N, R11, I11); a second driving circuit (220) comprising a second biasing circuit (I41, R41, M4P, M3P, M2N).Type: ApplicationFiled: January 21, 2014Publication date: December 3, 2015Applicant: ST- Ericsson SAInventors: Pierangelo CONFALONIERI, Federico GUANZIROLI, Germano NICOLLINI
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Publication number: 20150263755Abstract: A new approach is disclosed concerning offset cancellation methods in analog to digital converters and analog to digital converters implementing the same. Such approach allows to efficiently cancel offset drifts in analog to digital converters.Type: ApplicationFiled: November 7, 2013Publication date: September 17, 2015Applicant: ST-ERICSSON SAInventors: Pierangelo Confalonieri, Federico Guanziroli, Alberto Minuti
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Patent number: 9054646Abstract: The invention relates to an electronic integrated amplifier for driving an acoustic transducer. The amplifier comprises two differential input terminals to receive an input signal and a first and a second output terminal to provide an output signal to the transducer. In addition, the amplifier comprises an operational amplifier having an input end including differential inputs and an output end operatively associated with the first and second output terminals. A pair of input resistors connect the two differential input terminals to two intermediate terminals, respectively. A pair of feedback resistors connect the first and second output terminals to the two intermediate terminals, respectively. The integrated amplifier also comprises means for high-pass filtering the input signal.Type: GrantFiled: August 2, 2011Date of Patent: June 9, 2015Assignee: ST-ERICSSON SAInventors: Germano Nicollini, Federico Guanziroli, Massimo Orio, Carlo Pinna
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Patent number: 8692612Abstract: The present disclosure relates to an electronic regulation device of a variable capacitance of an integrated circuit having a time parameter depending on the variable capacitance. The regulation device includes a regulation loop, and is configured to generate in output a plurality of binary regulation signals.Type: GrantFiled: September 27, 2010Date of Patent: April 8, 2014Assignee: STMicroelectronics S.r.l.Inventors: Pierangelo Confalonieri, Federico Guanziroli, Germano Nicollini
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Publication number: 20130208922Abstract: The invention relates to an electronic integrated amplifier for driving an acoustic transducer. The amplifier comprises two differential input terminals to receive an input signal and a first and a second output terminal to provide an output signal to the transducer. In addition, the amplifier comprises an operational amplifier having an input end including differential inputs and an output end operatively associated with the first and second output terminals. A pair of input resistors connect the two differential input terminals to two intermediate terminals, respectively. A pair of feedback resistors connect the first and second output terminals to the two intermediate terminals, respectively. The integrated amplifier also comprises means for high-pass filtering the input signal.Type: ApplicationFiled: August 2, 2011Publication date: August 15, 2013Applicant: ST-ERICSSON SAInventors: Germano Nicollini, Federico Guanziroli, Massimo Orio, Carlo Pinna
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Publication number: 20130170659Abstract: An integrated circuit for processing audio and voice signals in a telephone is disclosed. The integrated circuit comprises an audio output port having a first and a second output terminal for connection to a first and a second input terminal, respectively, of a speaker. The integrated circuit further comprises an audio input port having a first and a second input terminal for connection to a first and a second output terminal of an audio input source. The integrated circuit also comprises at least one audio output path and one audio input path. Moreover, the integrated circuit comprises a test impedance, such as a resistor, (RT) for measuring an electrical impedance of the speaker.Type: ApplicationFiled: July 7, 2011Publication date: July 4, 2013Applicant: ST-ERICSSON SAInventors: Federico Guanziroli, Sergio Pernici, Robert Nilsson, Jan R.E. Thimansson
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Patent number: 8427196Abstract: A system includes analog supply circuitry providing first and second analog potentials. A switch module assumes first or second states to enable and inhibit transfer of an analog electrical signal from a source module to a user module based upon a driving electrical signal. A driving device drives, based upon the driving electrical signal, a control terminal of the switch module, allowing the switch module to assume the first or second state. The driving device allows the switch module to make a first driving transition from the first state to the second state, and a second driving transition from the second state to the first state. The driving device alternately connects the control terminal to a first reference potential, during the first state, and to a second reference potential, during the second state.Type: GrantFiled: September 29, 2010Date of Patent: April 23, 2013Assignee: STMicroelectronics S.R.L.Inventors: Pierangelo Confalonieri, Federico Guanziroli, Marco Zamprogno